Re: FW: NEED SOLUTION FOR ERROR
It would also be helpful to list the full traceback as well as the exact command used (e.g. package attempted to install and passed arguments to pip). A bad file descriptor error sounds like there's a fair chance of it being an issue within a specific module, or something like your OS running out of FDs (rare, but definitely possible if the max limit is low). On Sun, Oct 11, 2020 at 10:12 PM MRAB wrote: > On 2020-10-11 09:13, hey wrote: > > > > > > Sent from Mail for Windows 10 > > > > From: hey > > Sent: Saturday, October 10, 2020 7:40 PM > > To: python-list@python.org > > Subject: NEED SOLUTION FOR ERROR > > > > I am Akshat Sharma one of python user from INDIA . I am facing problem > in getting pip installed. > > When I am trying to install a module using PIP it showing me error : No > such file found in directory . > > Then I tried to install pip doing so , I am getting another error : > OSError [errno 9] Bad File Descriptor. > > Please guide me what should I do to overcome this type of error. > > THANK YOU > > Regards > > > You could try using the pip module via the Python launcher. > > Instead of: > > pip install something > > try: > > py -m pip install something > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
Weird behavior for IDLE...
Why does IDLE always open with the lowest three lines of the window end up hidden below the bottom of the screen behind the task bar? Every time I use it, I have to stop and grab the top of the window and drag it up to see the line and row information. I explored the Options/Configure IDLE but did not see anything that would help. It is most annoying, is there a fix for it? I explored Steve == Footnote: Mars is the only known planet in our solar system solely inhabited by functioning robots. -- https://mail.python.org/mailman/listinfo/python-list
Simple question - end a raw string with a single backslash ?
I am trying to write a simple expression to build a raw string that ends in a single backslash. My understanding is that a raw string should ignore attempts at escaping characters but I get this : >>> a = r'end\' File "", line 1 a = r'end\' ^ SyntaxError: EOL while scanning string literal I interpret this as meaning that the \' is actually being interpreted as a literal quote - is that a bug ? If I try to escaped the backslash I get a different problem: >>> a = r'end\\' >>> a 'end' >>> print(a) end\\ >>> len(a) 5 >>> list(a) ['e', 'n', 'd', '\\', '\\'] So you can see that our string (with the escaped backslash) is now 5 characters with two literal backslash characters The only solution I have found is to do this : >>> a = r'end' + chr(92) >>> a 'end\\' >>> list(a) ['e', 'n', 'd', '\\'] or >>> a = r'end\\'[:-1] >>> list(a) ['e', 'n', 'd', '\\'] Neither of which are nice. -- https://mail.python.org/mailman/listinfo/python-list
Re: Simple question - end a raw string with a single backslash ?
On 10/13/20, Tony Flury via Python-list wrote: > I am trying to write a simple expression to build a raw string that ends > in a single backslash. My understanding is that a raw string should > ignore attempts at escaping characters but I get this : > > >>> a = r'end\' >File "", line 1 > a = r'end\' >^ > SyntaxError: EOL while scanning string literal Since r'\'' represents a two-character string with a backslash and a single quote, ending a raw string literal with an odd number of backslashes requires adding the final backslash using implicit string-literal concatenation. For example: >>> r'some\raw\string''\\' 'some\\raw\\string\\' Other ways to get the same result may operate at runtime instead of at compile time. -- https://mail.python.org/mailman/listinfo/python-list
Re: What might cause my sample program to forget that already imported datetime?
On 10/12/20 7:20 AM, Chris Angelico wrote: > This is yet another reason that "from MODULE import *" is a bad idea. > Instead, just import the module itself, and take whatever you need. Or just import the objects that you need; from datetime import datetime, SYMBOL, etc... I use Decimal a lot. I would hate to have to write "decimal.Decimal(str)" for example. Whichever method you use the most important thing is to be consistent as much as possible. -- D'Arcy J.M. Cain Vybe Networks Inc. A unit of Excelsior Solutions Corporation - Propelling Business Forward http://www.VybeNetworks.com/ IM:da...@vybenetworks.com VoIP: sip:da...@vybenetworks.com OpenPGP_signature Description: OpenPGP digital signature -- https://mail.python.org/mailman/listinfo/python-list
Re: What might cause my sample program to forget that already imported datetime?
On Tue, Oct 13, 2020 at 9:03 PM D'Arcy Cain wrote: > > On 10/12/20 7:20 AM, Chris Angelico wrote: > > This is yet another reason that "from MODULE import *" is a bad idea. > > Instead, just import the module itself, and take whatever you need. > > Or just import the objects that you need; > > from datetime import datetime, SYMBOL, etc... > > I use Decimal a lot. I would hate to have to write "decimal.Decimal(str)" > for example. > > Whichever method you use the most important thing is to be consistent as > much as possible. Yep - either "import module" or "from module import name", but not "import *". Be precise. Be efficient. Have a plan to import every module you meet. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Weird behavior for IDLE...
On 10/13/2020 4:51 AM, Steve wrote: Why does IDLE always open with the lowest three lines of the window end up hidden below the bottom of the screen behind the task bar? Every time I use it, I have to stop and grab the top of the window and drag it up to see the line and row information. I explored the Options/Configure IDLE but did not see anything that would help. The issue is lines on the screen, which depends on screen, font, and fontsize, versus lines in the editor window plus lines above the editor window. On the General tab, you can ask for fewer lines in the editor window. Use Options -> Zoom Height to get the max lines possible. The positioning of the top of the window is the tk default. This might be changed if it became the highest priority. -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
Re: Covariance matrix syntax
I think the np.cov is from the numpy module (imported/aliased as np?). If so, the numpy repository should have what you are looking for: https://github.com/numpy/numpy/blob/156cd054e007b05d4ac4829e10a369d19dd2b0b1/numpy/lib/function_base.py#L2276 Hope that helps Bruno On Tuesday, 13 October 2020, 5:38:55 pm NZDT, Meghna Karkera wrote: May I know the steps or procedure behind covariance matrix syntax, np.cov(covar_matrix) in python -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: Simple question - end a raw string with a single backslash ?
13.10.20 11:52, Tony Flury via Python-list пише: > I am trying to write a simple expression to build a raw string that ends > in a single backslash. My understanding is that a raw string should > ignore attempts at escaping characters but I get this : > > >>> a = r'end\' > File "", line 1 > a = r'end\' > ^ > SyntaxError: EOL while scanning string literal > > I interpret this as meaning that the \' is actually being interpreted as > a literal quote - is that a bug ? r'You can\'t end raw string literal with a single "\"' If backslash be true inner in a raw string, the above literal would end after \'. It would be very hard to write a raw string containing both \' and \", and even \''' and \""" (there are such strings in the stdlib). So you have problem either with trailing backslash, or with inner backslash followed by quotes. Both problems cannot be solved at the same time. Python parser works as it works because initially it was easier to implement, and now this cannot be changed because it would break some amount of correct code. > The only solution I have found is to do this : > > >>> a = r'end' + chr(92) > >>> a > 'end\\' > >>> list(a) > ['e', 'n', 'd', '\\'] > > or > > > >>> a = r'end\\'[:-1] > >>> list(a) > ['e', 'n', 'd', '\\'] > > Neither of which are nice. You can also write r'end' '\\'. It is not too nice, but it looks nicer to me then two other variants. -- https://mail.python.org/mailman/listinfo/python-list
[ANN] Austin -- CPython frame stack sampler v2.0.0 is now available
I am delighted to announce the release 2.0.0 of Austin. If you haven't heard of Austin before, it is an open source frame stack sampler for CPython, distributed under the GPLv3 license. It can be used to obtain statistical profiling data out of a running Python application without a single line of instrumentation. This means that you can start profiling a Python application straightaway, even while it's running on a production environment, with minimal impact on performance. The simplest way of using Austin is by piping its output to FlameGraph for a quick and detailed representation of the collected samples. The latest release introduces a memory profiling mode which allows you to profile memory usage. Austin is a pure C application that has no other dependencies other than the C standard library. Its source code is hosted on GitHub at https://github.com/P403n1x87/austin The README contains installation and usage details, as well as some examples of Austin in action. Details on how to contribute to Austin's development can be found at the bottom of the page. Austin can be installed easily on the following platforms and from the following sources: Linux: - Snap Store - Debian repositories macOS: - Homebrew Windows: - Chocolatey - Scoop Austin is also simple to compile from sources as it only depends on the standard C library, if you don't have access to the above listed sources. Besides support for Python 3.9, this new release of Austin brings a considerable performance enhancement that allows it to sample up to 8 times faster than previous versions. But please do read on until the end to find out about some new tools that take advantage of all the key features of Austin. Due to increasing popularity, the sample Python applications that were included in the main repository have been moved to dedicated projects on GitHub. The TUI can now be found at https://github.com/P403n1x87/austin-tui while Austin Web is now available from https://github.com/P403n1x87/austin-web They can both be installed easily from PyPI, but in order to use them the Austin binary needs to be on the PATH environment variable. These projects now rely on the austin-python Python package that provides a Python wrapper around Austin. If you are considering making your own profiling tool based on Austin, this package can spare you from writing boilerplate code, so it's worth having a look at it at https://github.com/P403n1x87/austin-python The documentation is hosted on RTD at https://austin-python.readthedocs.io/en/latest/ Finally, I am happy to announce the release of pytest-austin, a plugin for pytest that allows you to set up performance regression testing by simply decorating your existing pytest test suite. The plugin launches Austin to profile your test runs, meaning that no further instrumentation is required. For more details, check out the project on GitHub https://github.com/P403n1x87/pytest-austin Like the other Austin tools, pytest-austin can be installed easily from PyPI. You can stay up-to-date with the project's development by following Austin on Twitter (https://twitter.com/AustinSampler). All the best, Gabriele https://github.com/P403n1x87/austin";>Austin 2.0.0 - frame stack sampler for CPython. (13-Oct-20) -- https://mail.python.org/mailman/listinfo/python-list
lmoments3 and scipy (again)
I'm aware there have been problems with previous versions of lmoments3 working with scipy -- comb having been replaced in scipy. I thought by using pip to install numpy, scipy, lmoments3 [whence distr] I would get compatible latest versions. I'm using 32-bit Python 3.8.6. I've verified scipy 1.5.2 and lmoments3 1.10.4 are present. But I still get a traceback referring to attribute comb not being present in module scipy.misc. Python 3.8.6 (tags/v3.8.6:db45529, Sep 23 2020, 15:37:30) [MSC v.1927 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license()" for more information. >>> import numpy >>> import scipy >>> import lmoments3 >>> from lmoments3 import distr >>> data = [135.2 ,130.1 ,117 ,109.3 ,92.1 ,91.4 ,83.1 ,80.5 ,74.7 ,69.8,65.2,58.6,56.5,55.4,54.6,54.5,49.5,48.9,48.3,46.6] >>> paras = distr.gpa.lmom_fit(data) Traceback (most recent call last): File "", line 1, in paras = distr.gpa.lmom_fit(data) File "C:\Users\David\AppData\Local\Programs\Python\Python38-32\lib\site-packages\lmoments3\distr.py", line 59, in lmom_fit lmom_ratios = lm.lmom_ratios(data, nmom=n_min) File "C:\Users\David\AppData\Local\Programs\Python\Python38-32\lib\site-packages\lmoments3\__init__.py", line 82, in lmom_ratios return _samlmusmall(data, nmom) File "C:\Users\David\AppData\Local\Programs\Python\Python38-32\lib\site-packages\lmoments3\__init__.py", line 159, in _samlmusmall l1 = np.sum(x) / sm.comb(n, 1, exact=True) AttributeError: module 'scipy.misc' has no attribute 'comb' What am I doing wrong? -- https://mail.python.org/mailman/listinfo/python-list
Re: lmoments3 and scipy (again)
Based on a search of the scipy docs, it looks like the function might have moved namespaces from scipy.misc.comb to scipy.special.comb ( https://docs.scipy.org/doc/scipy/reference/generated/scipy.special.comb.html?highlight=comb#scipy-special-comb) when referenced in lmoments3. Alternatively, if you clone the package from the repo directly, it seems to have been addressed in a recent commit: https://github.com/OpenHydrology/lmoments3/commit/3349b90463f649aea02be5dc3726d22e5e500dc3 . On Wed, Oct 14, 2020 at 12:00 AM David Painter wrote: > I'm aware there have been problems with previous versions of > lmoments3 working with scipy -- comb having been replaced in scipy. I > thought by using pip to install numpy, scipy, lmoments3 [whence distr] I > would get compatible latest versions. I'm using 32-bit Python 3.8.6. I've > verified scipy 1.5.2 and lmoments3 1.10.4 are present. But I still get a > traceback referring to attribute comb not being present in > module scipy.misc. > Python 3.8.6 (tags/v3.8.6:db45529, Sep 23 2020, 15:37:30) [MSC v.1927 32 > bit (Intel)] on win32 > Type "help", "copyright", "credits" or "license()" for more information. > >>> import numpy > >>> import scipy > >>> import lmoments3 > >>> from lmoments3 import distr > >>> data = [135.2 ,130.1 ,117 ,109.3 ,92.1 ,91.4 ,83.1 ,80.5 ,74.7 > ,69.8,65.2,58.6,56.5,55.4,54.6,54.5,49.5,48.9,48.3,46.6] > >>> paras = distr.gpa.lmom_fit(data) > Traceback (most recent call last): > File "", line 1, in > paras = distr.gpa.lmom_fit(data) > File > > "C:\Users\David\AppData\Local\Programs\Python\Python38-32\lib\site-packages\lmoments3\distr.py", > line 59, in lmom_fit > lmom_ratios = lm.lmom_ratios(data, nmom=n_min) > File > > "C:\Users\David\AppData\Local\Programs\Python\Python38-32\lib\site-packages\lmoments3\__init__.py", > line 82, in lmom_ratios > return _samlmusmall(data, nmom) > File > > "C:\Users\David\AppData\Local\Programs\Python\Python38-32\lib\site-packages\lmoments3\__init__.py", > line 159, in _samlmusmall > l1 = np.sum(x) / sm.comb(n, 1, exact=True) > AttributeError: module 'scipy.misc' has no attribute 'comb' > > What am I doing wrong? > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
